Finding the Third Proportional to 248,553.56 and 388,825.31

Step by Step Solution

1. Step 1: Write the proportion equation
   248,553.56 : 388,825.31 = 388,825.31 : x
2. Step 2: Convert to fraction form
   248,553.56/388,825.31 = 388,825.31/x
3. Step 3: Cross multiply
   248,553.56x = 388,825.31 × 388,825.31
4. Step 4: Simplify right side
   248,553.56x = 151,185,123,640.72
5. Step 5: Solve for x
   x = 151,185,123,640.72/248,553.56
6. Step 6: Final answer
   x = 608,259.73